After discovering that the spy agency he works for is hiding a gateway to a parallel dimension, a low-level UN bureaucrat in Berlin is thrust into a shadow world of intrigue and danger and must determine if he can trust his near-identical counterpart in the other world.
Elenco: J.K. Simmons , Olivia Williams , Harry Lloyd , Nazanin Boniadi , Betty Gabriel , Sara Serraiocco , Nicholas Pinnock , James Cromwell .